<template>
  <div>
    <!-- 面包屑导航区域-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList" @change="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4"><el-button type="primary" @click="addDialogVisible = true">添加用户</el-button></el-col>
      </el-row>

      <el-table :data="userList" style="width: 100%" border stripe>
        <el-table-column type="index" label="#"></el-table-column>
        <el-table-column prop="username" label="姓名"></el-table-column>

        <el-table-column prop="email" label="邮箱"></el-table-column>

        <el-table-column prop="mobile" label="电话"></el-table-column>

        <el-table-column prop="role_name" label="角色"></el-table-column>

        <el-table-column label="状态" width="100px">
          <template v-slot="scope">
            <el-switch v-model="scope.row.mg_state" active-color="#13ce66" inactive-color="#ff4949" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>

        <el-table-column label="操作" width="200px" v-slot="scope">
          <template>
            <!-- 修改按钮-->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>

            <!-- 删除按钮-->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>

            <!-- 分配角色按钮-->
            <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页栏-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 15, 20, 30]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户的对话框-->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="40%" @close="addDialogClosed">
      <el-form :model="addUserForm" :rules="UserFormRules" ref="addUserFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username"><el-input v-model="addUserForm.username"></el-input></el-form-item>

        <el-form-item label="密码" prop="password"><el-input v-model="addUserForm.password"></el-input></el-form-item>

        <el-form-item label="邮箱" prop="email"><el-input v-model="addUserForm.email"></el-input></el-form-item>

        <el-form-item label="手机号" prop="mobile"><el-input v-model.number="addUserForm.mobile"></el-input></el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 编辑用户信息的对话框-->
    <el-dialog title="修改用户信息" :visible.sync="editDialogVisible" width="40%">
      <el-form :model="editForm" :rules="UserFormRules" ref="editFormRef" label-width="70px">
        <el-form-item label="用户名"><el-input v-model="editForm.username" disabled></el-input></el-form-item>

        <el-form-item label="邮箱" prop="email"><el-input v-model="editForm.email"></el-input></el-form-item>

        <el-form-item label="手机号" prop="mobile"><el-input v-model="editForm.mobile"></el-input></el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 用户分配角色的对话框-->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">

      <p>当前的用户：{{ userInfo.username }}</p>
      <p>当前的的角色：{{ userInfo.role_name }}</p>
      <p>分配新角色：
        <el-select v-model="selectedRoleId" placeholder="请选择新角色">
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id">
            </el-option>
          </el-select>
      </p>

      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data () {
    /* 验证邮箱的函数变量 */
    var checkEmail = (rule, val, callback) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(val)) return callback()
      callback(new Error('请输入合法的邮箱'))
    }
    /* 验证手机号的函数变量 */
    var checkMobil = (rule, val, callback) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(val)) return callback()
      callback(new Error('请输入合法的手机号'))
    }

    return {
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      userList: [],
      total: 0,
      addDialogVisible: false,
      editDialogVisible: false,
      setRoleDialogVisible: false,
      addUserForm: {},
      editForm: {},
      userInfo: {},
      rolesList: [],
      selectedRoleId: '',
      /* 定义输入数据的规则 */
      UserFormRules: {
        username: [{ required: true, message: '请输入用户名', trigger: 'blur' }, { min: 3, max: 10, message: '长度应在 3 到 10 个字符之间', trigger: 'blur' }],
        password: [{ required: true, message: '请输入密码', trigger: 'blur' }, { min: 6, max: 15, message: '长度应在 6 到 15 个字符之间', trigger: 'blur' }],
        email: [{ required: true, message: '请输入邮箱地址', trigger: 'blur' }, { validator: checkEmail, trigger: 'blur' }],
        mobile: [{ required: true, message: '请输入手机号' }, { validator: checkMobil, trigger: 'blur' }]
      }
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    /* 获取用户列表 */
    async getUserList () {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error(res.meta.msg)
      this.userList = res.data.users
      this.total = res.data.total
    },
    /* 页面显示内容的大小 */
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    /* 页面现在处于的页数 */
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    /* 更新用户的状态 */
    async userStateChange (userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error(res.meta.msg)
      }
      this.$message.success('更新用户状态成功！')
    },
    /* 重置添加用户输入框的内容 */
    addDialogClosed () {
      this.$refs.addUserFormRef.resetFields()
    },
    /* 发起添加用户的请求 */
    addUser () {
      this.$refs.addUserFormRef.validate(async valid => {
        if (!valid) return this.$message.error('添加用户失败！')
        const { data: res } = await this.$http.post('users', {
          username: this.addUserForm.username,
          password: this.addUserForm.password,
          email: this.addUserForm.email,
          mobile: this.addUserForm.mobile
        })
        if (res.meta.status !== 201) return this.$message.error('添加用户失败！')
        this.$message.success('添加用户成功')
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    /* 显示编辑用户的对话框 */
    async showEditDialog (id) {
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('查询用户信息失败！')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    /* 提交用户编辑的信息 */
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return this.$message.error('编辑用户失败！')
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('编辑用户失败！')
        this.editDialogVisible = false
        this.$message.success('编辑用户信息成功')
        this.getUserList()
      })
    },
    /* 根据id对应的删除用户 */
    async removeUserById (id) {
      const confirmResult = await this.$confirm('此操作将永久删除用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      if (confirmResult !== 'confirm') {
        this.$message.info('已取消删除')
      } else {
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
        this.$message.success('删除用户成功了')
        this.getUserList()
      }
    },
    /* 展示分配角色的对话框 */
    async setRole (userInfo) {
      this.userInfo = userInfo

      /* 获取角色的列表 */
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色列表失败！')
      this.rolesList = res.data

      this.setRoleDialogVisible = true
    },
    /* 提交分配角色 */
    async saveRoleInfo () {
      if (!this.selectedRoleId) return this.$message.error('请选择要分配的角色！')
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) return this.$message.error('更新角色失败！')
      this.$message.success('更新角色成功了')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
    setRoleDialogClosed () {
      this.selectedRoleId = ''
    }
  }
}
</script>

<style scoped="scoped" lang="less"></style>
